Closure fastening device



Patented Oct. 1, 1

PATENT OFFICE.

CLOSURE FASTENING DEVICE Guy 0. Conner and Ernest ILRBock, Wheeling,

W. Va asslgnors to Wheeling Steel Corporation, Wheeling, W. Va., a. corporation Delaware Application January 25, 1938, Serial No. 186,833

3Clalms.

This invention relates to a device for applying a closure to a container and sealing it thereto.

Closures of various types have been provided for metallic receptacles heretofore. None of 6 these, however, so far as we are informed, is suitable for certain special applications. Metallic beer. kegs, for example, require a closure having a tight seal yet it is desirable that closures for such receptacles be easily applied and removed 10 by relatively unskilled labor.

We have invented a closure, together with means for applying it, which fully meets the requirements of this application and has other its ends and is adapted to receive a closure. If

the container is designed to be used only once, the closure may be sealed by curling over the edge thereof the extreme end of the sleeve. If the container is designed to be used repeatedly, a split sealing collar is disposed around the sleeve and the end of the collar is curled over the edge of the closure.

For sealing closures in accordance with our invention, we provide a tool comprising a collapsible ohuck made' up of a plurality of segmental fingers adapted to engage under the shoulder or ofiset before mentioned. A cup is adapted to embrace and collapse the chuck, while-a die carried on the cup moves axially of the chuck to curl the end of the sleeve. A manually operable toggle linkage facilitates operation of the parts 40 in the manner described.

The details of our invention are illustrated on the accompanying drawing and will he described fully herebelow.

In the drawing:

Fig. l is a vertical sectional view through the sealing tool of our invention in normal position, parts being shown in elevation;

Fig. 2 is a view similar to Fig. 1 "showing the parts in advanced position; and

Fig. 3 is a transverse sectional view along the line IH-III of Fig. 2.

The sealing tool of our invention comprises a pin or shaft it having a disc or plate ll secured thereto adjacent onelend. A plur it of seg- 55 mental fingers or laws l2 have hooked lower ends in Fig. l. Outward and downward pressure on It and socketed upper ends I whereby they are carried on pins projecting radially from the edge of the disc I I. A cup I5 is adapted to embrace the fingers or laws 12 and has a conical lower end It adapted to cooperate with similarly shaped 6 portions of the fingers l2 to close them when .the cup is moved'downwardly from the position shown in Fig. 1 to that shown in Fig. -2. The disc H and fingers l2 thus constitute a contractible collapsible chuck operable by advance- 10 ment of the cup l5.

A curling die I1 is disposed within the laws l2, being supported from the cup I! by screws It. Studs I9 engage the die ll andcup l5 and are eflective to transmit thrust from the latter to the former. The disc II is provided with holes for the screws l8 and the studs I8.

Toggle links are pivoted at 2| to the cup it. Toggle links 22 are pivoted to the links 20 at'23 and at 24 to a bearing 25 secured to the pin ll 80 as by the rivet 26. A spring 21 normally holds the parts in the position illustrated in Fig. 1. a

Levers 28 extend upwardly from the links 22 and terminate in yoke-shaped handles 29. By pressing outwardly and downwardly on the handles 26 29, the toggle linkages 20and 22 are extended, as shown in Fig. 2, to pull up on the jaws or fingers l 2 and push down on the cup l5 and die l'l. The tool described above is particularly adaptedfor the sealing ofa closure such as shown in 8d Figs. 1 and 2. As there-shown, a container 3|, such as a beer keg, has an opening 32 in the wall thereof. A sleeve 33 extends upwardly from the opening, the edge of the opening being curled around a head formed on the inner end of the sleeve, as shown at 34. An outwardly extending oilset or shoulder 35 is formed in the" sleeve intermediate its ends. A closure 36 comprises a disc ill having a peripheral flange 88 terminating in a head 39. The closure is adapted to be placed 40 over the opening 32 with a gasket 40 below it, the gasket and closure seating on the curled edge 34 of the opening 532.

A split sealing collar 41 is dis sed over the sleeve 33, being expanded at the split to permit such disposition thereof. The collar 4| has an inwardly extending shoulder 32 adapted to engage under the shoulder 35 of the. sleeve 33. The outer end of the collar, furthermore, is curved inwardly to a slight extent, as shown at it.

When the closure 36 and the collar ll have been disposed as shown in Fig. l, the sealing tool is disposed therearound as shown in dotted lines the handles 29 forces the cup II and die ll downward. Downward movement of the cup l closes the jaws l2, whereupon they engage under the inwardly curved end 43 of the collar 4| and deforms it to the condition shown in Fig. 2, in

- which the end of the collar is fully curled inwardly and over the head 39 on the closure 36, the grip of the jaws I! under the shoulder 42 furnishing the reaction necessary for the deforming operation. The gasket is compressed as shown in Fig. 2 by the downward pressure on the die I! and a very tight seal is thus effected. The spring 21 restores the parts to the position shown in'Fig. 1 when the pressure on the handles 29 is relieved. The jaws I2 being thereby expanded, the tool may easily be removed from the sealed closure.

When the container has been delivered to the user of the contents thereof, the closure may readily be released for removal by the aid of a tool capable of bending up the inturned edge. of the collar 4| at intervals therearound.

It will be apparent from the foregoing description that the invention provides a simple yet effective means for closing filling openings in containers. The closing tool is particularly advan-.

tageous since no particular skill is required for its operation. It produces a tight effective seal, nevertheless, which at the same time is easily removable, I

Although we have illustrated and described but one preferred form of tool, it will be apparent that the details shown may be varied withoutdeparting from the spirit of the invention or the scope of the appended claims.

We claim: l. A'tool for crimping a sealing collar on a sleeve, said sleeve and collar having an offset shoulder, said tool comprising a vertical shaft.

atdisc secured thereto, segmental jaws mounted on said disc and movable radially thereof, said jaws being adapted to engage under said shoulder, a cup embracing said jaws and slidable downwardly on said shaft, said cup and jaws having cooperating surfaces effective on downward movement of the cup to close the jaws, a curling die movable on said shaft within. the jaws, and studs extending through said disc and spacing said cup and die, whereby downward movement of said cup effects similar movement of said die.

21. A tool for crimping a sealing collar on a sleevefsaid sleeve and collar having an offset shoulder, said tool comprising a vertical shaft, a disc 'securedthereto, segmental jaws mounted on said disc and movable radially thereof, said jaws being adapted to engage under said shoulder, a cup embracing said jaws and slidable downwardly "on said shaft, said cup and jaws having cooperating surfaces effective on downward movement of the cup to close the jaws, a curling die movable on said shaft within the jaws, and means extending through said discconnecting said cup to said die whereby the die moves with the cup along said shaft.

3. A tool for crimping a sealing collar on a sleeve, said sleeve and collar-having an offset shoulder, said tool'comprisinga vertical shaft, a disc securedthereto, segmental jaws mounted on said 'disc and movable radially thereof, said jaws having a pin and socket connection to said disc and being adapted to engage under said shoulder,

a cup embracing said jaws and slidable downwardly on said shaft, said cup and jaws having cooperating surfaces eilective on downward movement of the cup to close the jaws, a curling die movable on said shaft within the jaws, and studs extending through said disc and spacing said cup and die; whereby downward movement of said cup effects similar movement of said die.

GUY 0. CONNER.

ERNEST H. BOCK. 

